78018304320 has 168 divisors, whose sum is σ = 292746074400. Its totient is φ = 18913520640.

The previous prime is 78018304307. The next prime is 78018304321. The reversal of 78018304320 is 2340381087.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78018304321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199670 + ... + 1263029.

Almost surely, 2^78018304320 is an apocalyptic number.

It is an amenable number.

78018304320 is an abundant number, since it is smaller than the sum of its proper divisors (214727770080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78018304320 is a wasteful number, since it uses less digits than its factorization.

78018304320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462733 (or 2462720 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 78018304320 in words is "seventy-eight billion, eighteen million, three hundred four thousand, three hundred twenty".